When seasons change in the Rockies, the weather hazards shift from thunderstorms to raging wind and snow. Our updated Piolet Jacket remains unfazed. It protects, moves and breathes with an improved shell, using a more supple 2-layer polyester waterproof/breathable and windproof GORE-TEX fabric that has a DWR (durable water repellent) finish. The hanging liner is now comprised of a brushed and wicking mesh in the body, with smooth-layering taffeta in the sleeves, and the improved drop-collar design on the helmet-compatible, 2-way adjustable hood provides exceptional coverage and visibility. Finer details include minimal welt exterior and interior storm flaps on the center-front zipper; extremely low-bulk, watertight, coated pit zips; and three external pockets (the jacket also has an internal zippered security pocket). With low-profile contoured cuff closures and full-reach gusseted underarm panels for mobility.